1. CARDIOVASCULAR RESPONSE TO HYPOXEMIA (H) IN CHRONICALLY CATHETERIZED FETAL LLAMAS
- Author
-
M Espinoza, Raquel A. Riquelme, Fernando A. Moraga, Rodrigo Zapata, Gertrudis Cabello, Aníbal J. Llanos, Emilia M. Sanhueza, and C Gaete
- Subjects
Bradycardia ,Fetus ,Mean arterial pressure ,medicine.medical_specialty ,Cardiac output ,business.industry ,Hypoxemia ,Endocrinology ,Cerebral blood flow ,Renal blood flow ,Internal medicine ,Pediatrics, Perinatology and Child Health ,Heart rate ,Medicine ,medicine.symptom ,business - Abstract
Fetal sheep responds to H with blood hypertension, bradycardia, and cardiac output redistribution. Since the response to H in fetuses from species that evolved at high altitudes is not fully known, we studied the cardiovascular response to H in chronically catheterized fetal llamas. we determined in 7 fetal llamas (4 post surgery days) arterial gases, mean arterial pressure, heart rate, cardiac output and its distribution (radiolabelled microspheres) basally (50%Sat Hb descending aorta) and after 20 min of H (14% Sat Hb). The results were: X±SEM,*p
- Published
- 1993